CthAngband is an unmaintained Angband variant written by David Thornley and set in H.P. Lovecraft's Dreamlands. Some of the new features of CthAngband include new races, classes and a skill system, where skills can be improved by using them. Because CthAngband is set in the Dreamlands, it features a whole new world of dungeons and dungeon guardians.

Kieron Dunbar took his many patches for CthAngband and turned them into a variant, sCthAngband, which continues CthAngband's spirit.